A Basic Study on the Relationship between the Environmental Characteristics and Turbidity Generation in Jaun Watershed

자운천 유역 내 환경특성과 탁류발생의 관계성에 대한 기초연구

  • Ham, Kwang-Jun (Gangwon Institute of Health & Environment) ;
  • Bae, Sun-Hak (Department of Geographic Education, Kangwon National University) ;
  • Kim, Joon Hyun (Division of Geosystem and Environmental Eng., Kangwon National University) ;
  • Park, Sung-Bin (Gangwon Institute of Health & Environment) ;
  • Kim, Sung-Seok (Gangwon Institute of Health & Environment)
  • 함광준 (강원도보건환경연구원) ;
  • 배선학 (강원대학교 지리교육과) ;
  • 김준현 (강원대학교 지구환경공학부) ;
  • 박성빈 (강원도보건환경연구원) ;
  • 김성석 (강원도보건환경연구원)
  • Received : 2006.04.14
  • Accepted : 2006.08.16
  • Published : 2006.08.30

Abstract

The purpose of this study is to understand the relation between the land use status in watersheds and stream turbidity. Major water quality components (flow rate, turbidity, SS, BOD, TN, TP, etc.) of two streams (Jaun and Naerin) and the land use status for each correspondent watershed have been analyzed through the field sampling and the geographical overlaying of land use and watershed map. The detailed results of this study showed that; turbidity has been increased rapidly from 1.9 to 13.0 NTU for Jaun Stream, 0.4 to 0.7 NTU for Naerin Stream, due to the increased flow rate during the period of June. The agricultural area of the Jaun watershed was $13.5km^2$ (10.1% of the overall watershed), comparing to $2.0km^2$(1.4%) of upper watershed of Naerin stream. The forest was widely distributed along the 30m buffering zone from the center of Naerin stream, which comprised 64.14% of the whole watershed area. But in case of the Jaun, the ratio of forest was 17.84%, while the ratio of farming field was 30.33%.

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